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1 October, 01:47

A coin is to be tossed 36 times what are the mean and standard deviation of the number of heads

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  1. 1 October, 03:01
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    Binomial distribution,

    n = 36 independent events,

    p = 0.5 probability of success and of failure, as 1-p = p.

    Mean of binomial distribution is np=18.

    Variance is np (1-p) = 9

    Standard deviation is sqrt (variance) = 3.
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